Display screen or portion thereof with icon



FIG. 1 is an enlarged front view of a display screen or portion thereof with icon showing our new design; and,

FIG. 2 is a front view of the display screen or portion thereof with icon of FIG. 1 shown on a device.

The broken line showing of the display screen is included for the purpose of illustrating portions of the article and form no part of the claimed design. The broken line showing of the device is included for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with icon, as shown and described. 